python - 最大和最小字符数

Question

我是Python新手。我正在尝试制作一个需要输入 3 个字母的生成器。我需要它只接受 3 个字母，不多不少。我输入的 if len 不起作用

import random

usernames = int(input("How Many Usernames Are To Be Generated?"))
names = []
for item in range(0,usernames):
    names.append(input("What Is The First Three Letters of The Pupils Name?"))
if len(names) == 3:
    suffixes = ["ing", "end", "axe", "gex", "goh"]
    for name in names:
        final = name + random.choice(suffixes)
        print(final)
else (names):
    print("Error! Must Be 3 Characters")

Answer 1

else 不需要任何条件

import random

usernames = int(input("How Many Usernames Are To Be Generated?"))
names = []
for item in range(0,usernames):
    names.append(input("What Is The First Three Letters of The Pupils Name?"))
if len(names) == 3:
    suffixes = ["ing", "end", "axe", "gex", "goh"]
    for name in names:
        final = name + random.choice(suffixes)
        print(final)
else :
    print("Error! Must Be 3 Characters")